I loved the price tag on these, but gut stuck on the side of the road because of them. Got a flat in my other tube, used this one to replace, and because the valve stems were so short, all of the CO2 in my canister didn't go into the tire and I was stranded. If you use these, carry a mini pump or double check your CO2 inflator will seal with the stem based on the length. I now use a different tube as my emergency tube and keep these ones in the tires, my floor pump fits them fine. My rims are standard bontrager mtn bike rims, nothing extra thick.

Test these first before ride. Two of four failed (either punctured or came defective) on first inflation. Leaked IMMEDIATELY before wheel even put on bike. Tire had been cleaned and inspected by hand twice before mounting for first two failures. Nothing new found on third inspection, third tube holding so far. Coincidence, couldn't access the reviews on this product?

If you're really riding you'll blow a tube at some point. I've really never found value in higher prices rubber. These hold air, they can handle a patch or 2, easy to carry a couple extra in you pack. What else is there to say? The price is right on these.

These tubes are sick, I use them on my Dirt Jump bike, but before I used them on my Dirt Jump bike I had them on a trail bike, for about a season, still about 3-5 months later still rolling good. I ride these tubes pretty hard on my bike, dirt jumps, big drops, etc..So overall buy these, cant pass up the good deal:)

Have 2 bikes that needed new tubes & tires. No problem with one set. On my bike, tube blew up while inflating, blowing tire off rim. Bead is blown out on 5" of tire. Was told by local shop that tire probably came that way, wouldn't have happened when I was inflating. Said it wasn't a bad tube. dunno. Needed tube/tire for ride next day, so bought from local shop.